Finally got a chance to install @tedward4's kit on my 1620. Pretty easy install. Minor fabrication for the hose support bracket. Also the actuation lever needs to be pretty much exactly the same angle as the one shipped with the valve, but 1.5" shifted to the right. I just banged the one that came with the kit into the right shape and drilled holes in the right spot. Hose fittings are angled slightly inward as they point rearward for maximum clearance. This kit should fit without problems 1520, 1620, 1720 tractors. Also possibly 1320 tractors.